chore: upgrade dependencies

Also remove coverage run, as we don't really use it in this lib anyway.

tox.ini

@@ -8,7 +8,6 @@ envlist =
     py{310,311,312,313}-django51
     py{310,311,312,313,314}-django52
     lint
-    coverage
 
 [gh-actions]
 python =
@@ -39,13 +38,6 @@ basepython = python3.12
 deps = pre-commit
 commands = pre-commit run --all-files --show-diff-on-failure
 
-[testenv:coverage]
-commands =
-    coverage run manage.py test --no-input {posargs}
-    coverage xml -i
-extras = test
-pip_pre = true
-
 [flake8]
 max-line-length=88
 ignore=E203,W503